发明名称 |
SYSTEM UND VERFAHREN ZUR KATALYSATORÜBERWACHUNG |
摘要 |
A total amount of NOX that flows into an NOX catalyst between the time that air-fuel ratio control ends and the time that the air-fuel ratio control starts the next time, is obtained. A total stored amount, which is the sum of an oxygen stored amount and an stored amount in the NOX catalyst before the air-fuel ratio control started, is calculated based on the amount of reducing agent that has flowed into the NOX catalyst during the air-fuel ratio control. The oxygen stored amount is calculated by extrapolating a relationship between the total amount of NOX and the total stored amount. The relationship is established beforehand by executing the air-fuel ratio control with at least two levels. |
申请公布号 |
DE602007009541(D1) |
申请公布日期 |
2010.11.11 |
申请号 |
DE20076009541T |
申请日期 |
2007.08.13 |
申请人 |
DENSO CORPORATION;TOYOTA JIDOSHA KABUSHIKI KAISHA |
发明人 |
SAWADA, HIROSHI;HORI, TSUNENOBU |
分类号 |
F01N11/00;F01N3/08;F01N3/20;F02D41/02 |
主分类号 |
F01N11/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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